JPS6140900Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cleaning mechanism for an exhaust gas cleaning device.

Previously, the creator of this device used it as an exhaust gas cleaning device for internal combustion engines, etc., by drilling a large number of small holes (throttling holes) in the cleaning cylinder that introduces and discharges exhaust gas in the direction of blocking the gas flow inside. We have proposed a structure in which a collection chamber is formed with a squeeze plate and an excess collection material inserted behind it. It is characterized by the use of phenomena such as cooling coupling (which refers to the combined effects of these) and overeffects caused by a collection material.

According to the above device, the harmful components in the gas are over-collected together with the solids such as the medium, so the internal collection material becomes clogged with long-term use and the collection efficiency decreases, so this should be avoided. Must be cleaned to preserve its lifespan.

To solve this problem, a mechanism has been developed that removes the deposits from the collection material by sending high-pressure air into the inside of the cleaning cylinder (see Japanese Patent Publication No. 14367/1983). There is a drawback that deposits are not removed sufficiently because the influence of pulsation is not transmitted.

This invention aims to provide a cleaning mechanism for a cleaning device that solves these problems, and the embodiment shown below will be described in detail. FIGS. 1 and 2 show the main parts of the cleaning device of the invention. In the partial cross-sectional view, a cooling pipe 2 is provided concentrically with the cylindrical cleaning cylinder 1 that introduces exhaust gas from the front and discharges it to the rear, and is fixed at the center of the cleaning cylinder 1. The cooling pipe 2 penetrates the front and rear ends of the cleaning cylinder 1, and normally outside air flows therethrough to cool the inside of the cleaning cylinder.

Between the outer periphery of the cooling pipe 2 and the inner periphery of the cleaning cylinder 1 is a squeeze plate 3 that causes an expansion phenomenon by passing high-temperature, high-pressure exhaust gas introduced from the engine exhaust pipe (not shown). is fixed in a direction that blocks the gas flow, and the aperture plate 3 has a large number of small holes (throttle holes) 3a of a constant diameter, and as the gas passes through these small holes, the temperature and pressure decrease. Condensation (liquefaction) of the gas occurs, and inside the next condensation chamber 4, complex turbulence, solid particles contained in the gas, and liquefied gas (fine water droplets...including various chemical components in the gas) occur. Liquefied gas and other solid substances (particles) bond and grow as particles with progressively larger diameters due to collisions between particles.

Reference numeral 5 denotes a collection chamber formed following the condensation chamber 4, into which a heat-resistant and corrosion-resistant collection material 6 made of stainless wool or the like is inserted, and the front and back are partitioned by ventilation plates 7 that allow ventilation. It is being Here, the gas, fine water droplets, medium, particles, heavy metals, etc. that have passed through the condensation chamber 4 collide and adhere to the collection material 6.
In this process, the particles contained in the gas mentioned above are significantly promoted, and the particles are bonded and grown into larger particles with higher efficiency, which are then attached to and collected by the collection material.

Behind the collection chamber 5, a plurality of stages of a squeeze plate 3, a condensation chamber 4, and a collection chamber 5 are successively repeated via a certain space (expansion chamber 8), and gas expansion phenomena and overeffects are also prevented. This is done step by step. The collection chamber 5 has a large number of ventilation holes 9a in the peripheral wall, or has a peripheral wall like a net-like material that allows free ventilation, and has a plurality of ventilation holes 9a with the front end sealed and the rear end open. The porous tubes 9 are inserted at a constant pitch so as to be supported by the collection material 6. This porous tube 9 can also be a double cylindrical tube inserted between the cleaning tube 1 and the cooling tube 2 so as to form a cylindrical space in the collection chamber 5, as shown in FIG. , in this case ventilation hole 9
A is bored in the inner peripheral wall and the outer peripheral wall of the double cylindrical tube, and the cross section of the tube is U-shaped or U-shaped.

A collected material take-out pipe 10 is attached to the bottom of the expansion chamber 8, and this attachment pipe 10 merges with a take-out pipe (not shown) of another expansion chamber 8 to form a single pipe, and a filter is attached to the tip of the pipe. A collected material storage section consisting of a bag etc. is attached.

In order to take out the collected material collected in the collection chamber 5 in the above-mentioned mechanism, first close the exhaust port (not shown) at the rear end of the cleaning tube 1 and then close the exhaust port (not shown) at the front end of the cleaning tube 1 or the engine exhaust pipe. By blowing high-pressure air into or pulsating air into the air, the collected matter adhering to the collecting material 6 is separated by wind pressure or vibration. The collected material separated here is the ventilation hole 9a.
The gas flows into the porous pipe 9, which has low resistance to gas flow, and is discharged into the expansion chamber 8 from its open rear end, and is also discharged to the outside through the take-out pipe 10, which opens at the bottom of the expansion chamber 8. taken out.

When supplying compressed air into the cleaning cylinder 1, the front of the supply part (for example, in the middle of the exhaust pipe) and the exhaust port at the rear end of the cleaning cylinder 1 must be blocked with dampers, valves, etc., but the compressed air cannot be supplied. Takeout pipe 10 instead of
A similar effect can be obtained by suctioning from the end of the tube with a vacuum pump, and in this case there is no need to close the front and rear of the cleaning tube.

Since this device is constructed as described above, the collected material is separated and collected from the collecting chamber 5, especially from the central part of the collecting material 6, so that the cleaning effect is good, and the collected material is This method has the advantage that the structure is extremely simple and the manufacturing cost is low because only a porous pipe is inserted into the center of the collected wood layer to form a space.

[Brief explanation of drawings]

Fig. 1 is a partially sectional side view of a cleaning device showing the main parts of the present invention, and Fig. 2 is a partially sectional front view thereof.
FIG. 3 is a perspective view of a portion showing another embodiment. 1... Cleaning tube, 2... Cooling pipe, 3... Squeezing plate, 3a... Small hole (throttle hole), 4... Condensation chamber,
5... Collection chamber, 6... Collection material, 7... Ventilation plate, 8
...Expansion chamber, 9...Porous pipe, 9a...Vent hole, 1
0... Outlet.

Claims (1)

[Scope of utility model registration request] A collection chamber 5 filled with a squeezing plate 3 having a large number of small holes 3a bored in the cleaning cylinder 1 and an excess collection material 6.
and an expansion chamber 8 formed at the rear of the collection chamber 5, the peripheral wall is provided with a large number of ventilation holes 9a, or has a peripheral wall with free ventilation such as a net-like material, and the rear end The porous tube 9 with the opening is inserted into the collection chamber 5.
A cleaning mechanism for an exhaust gas cleaning device that is inserted into a collection material 6 to form a space therein.